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authorAyaz Abdulla <aabdulla@nvidia.com>2009-03-05 08:02:03 +0000
committerDavid S. Miller <davem@davemloft.net>2009-03-10 05:29:46 -0700
commit582806be066bd35dc5d2739b090b561a5efd787a (patch)
tree0546c97440fb527dcc81f749f6af99599d9c645f /drivers/net/forcedeth.c
parentd41c628c514bceb33037c26f83585c629594bed5 (diff)
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forcedeth: save irq events for napi processing
This patch will save the irq events in the driver's context so that the napi routine knows which interrupts have occurred. Subsequent changes will be moving all interrupt processing into the napi poll routine. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/forcedeth.c')
-rw-r--r--drivers/net/forcedeth.c47
1 files changed, 23 insertions, 24 deletions
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index a4f2f14..37cd23f 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -759,6 +759,7 @@ struct fe_priv {
dma_addr_t ring_addr;
struct pci_dev *pci_dev;
u32 orig_mac[2];
+ u32 events;
u32 irqmask;
u32 desc_ver;
u32 txrxctl_bits;
@@ -3417,21 +3418,20 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
- u32 events;
int i;
dprintk(KERN_DEBUG "%s: nv_nic_irq\n", dev->name);
for (i=0; ; i++) {
if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
- events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
+ np->events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
} else {
- events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
+ np->events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
}
- dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
- if (!(events & np->irqmask))
+ dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
+ if (!(np->events & np->irqmask))
break;
nv_msi_workaround(np);
@@ -3441,7 +3441,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
spin_unlock(&np->lock);
#ifdef CONFIG_FORCEDETH_NAPI
- if (events & NVREG_IRQ_RX_ALL) {
+ if (np->events & NVREG_IRQ_RX_ALL) {
spin_lock(&np->lock);
napi_schedule(&np->napi);
@@ -3464,7 +3464,7 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
}
}
#endif
- if (unlikely(events & NVREG_IRQ_LINK)) {
+ if (unlikely(np->events & NVREG_IRQ_LINK)) {
spin_lock(&np->lock);
nv_link_irq(dev);
spin_unlock(&np->lock);
@@ -3475,15 +3475,15 @@ static irqreturn_t nv_nic_irq(int foo, void *data)
spin_unlock(&np->lock);
np->link_timeout = jiffies + LINK_TIMEOUT;
}
- if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
+ if (unlikely(np->events & (NVREG_IRQ_TX_ERR))) {
dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
- dev->name, events);
+ dev->name, np->events);
}
- if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
+ if (unlikely(np->events & (NVREG_IRQ_UNKNOWN))) {
printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
- dev->name, events);
+ dev->name, np->events);
}
- if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
+ if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
spin_lock(&np->lock);
/* disable interrupts on the nic */
if (!(np->msi_flags & NV_MSI_X_ENABLED))
@@ -3534,21 +3534,20 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
struct net_device *dev = (struct net_device *) data;
struct fe_priv *np = netdev_priv(dev);
u8 __iomem *base = get_hwbase(dev);
- u32 events;
int i;
dprintk(KERN_DEBUG "%s: nv_nic_irq_optimized\n", dev->name);
for (i=0; ; i++) {
if (!(np->msi_flags & NV_MSI_X_ENABLED)) {
- events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
+ np->events = readl(base + NvRegIrqStatus) & NVREG_IRQSTAT_MASK;
writel(NVREG_IRQSTAT_MASK, base + NvRegIrqStatus);
} else {
- events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
+ np->events = readl(base + NvRegMSIXIrqStatus) & NVREG_IRQSTAT_MASK;
writel(NVREG_IRQSTAT_MASK, base + NvRegMSIXIrqStatus);
}
- dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, events);
- if (!(events & np->irqmask))
+ dprintk(KERN_DEBUG "%s: irq: %08x\n", dev->name, np->events);
+ if (!(np->events & np->irqmask))
break;
nv_msi_workaround(np);
@@ -3558,7 +3557,7 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
spin_unlock(&np->lock);
#ifdef CONFIG_FORCEDETH_NAPI
- if (events & NVREG_IRQ_RX_ALL) {
+ if (np->events & NVREG_IRQ_RX_ALL) {
spin_lock(&np->lock);
napi_schedule(&np->napi);
@@ -3581,7 +3580,7 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
}
}
#endif
- if (unlikely(events & NVREG_IRQ_LINK)) {
+ if (unlikely(np->events & NVREG_IRQ_LINK)) {
spin_lock(&np->lock);
nv_link_irq(dev);
spin_unlock(&np->lock);
@@ -3592,15 +3591,15 @@ static irqreturn_t nv_nic_irq_optimized(int foo, void *data)
spin_unlock(&np->lock);
np->link_timeout = jiffies + LINK_TIMEOUT;
}
- if (unlikely(events & (NVREG_IRQ_TX_ERR))) {
+ if (unlikely(np->events & (NVREG_IRQ_TX_ERR))) {
dprintk(KERN_DEBUG "%s: received irq with events 0x%x. Probably TX fail.\n",
- dev->name, events);
+ dev->name, np->events);
}
- if (unlikely(events & (NVREG_IRQ_UNKNOWN))) {
+ if (unlikely(np->events & (NVREG_IRQ_UNKNOWN))) {
printk(KERN_DEBUG "%s: received irq with unknown events 0x%x. Please report\n",
- dev->name, events);
+ dev->name, np->events);
}
- if (unlikely(events & NVREG_IRQ_RECOVER_ERROR)) {
+ if (unlikely(np->events & NVREG_IRQ_RECOVER_ERROR)) {
spin_lock(&np->lock);
/* disable interrupts on the nic */
if (!(np->msi_flags & NV_MSI_X_ENABLED))